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Stephen Day

Gas Safe Engineer at iHeat

Stephen Day is a Gas Safe registered and FGAS certified engineer with over 20 years of hands-on experience in the heating, cooling, and renewable energy industry, specialising in boiler installations, air conditioning, and heat pump systems.

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About Stephen Day

Stephen Day is a Gas Safe registered and FGAS certified engineer with over 20 years of hands-on experience in the heating, cooling and renewable energy industry.

Throughout his career, Stephen has designed, installed and maintained thousands of systems across homes and businesses in the UK. His background on the tools, combined with his directorship role at iHeat, gives him a rare understanding of both the technical and operational sides of the industry.

He has helped to secure Which? Trusted Trader accreditation all with a focus on delivering great service and long-term value for customers. He also writes for the iHeat blog, sharing practical advice and explaining heating topics in plain, helpful language.

Stephen continues to stay up to date with the latest heating technologies, building regulations and low-carbon innovations.

Gas Safe ID: 5910722

Expertise

  • Boiler systems and installation
  • Heat pumps and hybrid heating systems
  • Gas safety and compliance
  • System design
  • Renewable and low-carbon technologies
  • Technical training


Articles by Stephen Day are reviewed by iHeat’s technical team for accuracy and reliability.

Stephen Day's latest articles

Boiler Service Glasgow

30th May, 2025 Guides

Boiler Service Glasgow

Boiler servicing is a comprehensive check involving numerous standard procedures to ensure...

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Worcester Bosch Boilers Reviews

30th May, 2025 Reviews

Worcester Bosch Boilers Review...

Worcester Bosch's 2025 boiler range extends its legacy of providing high-quality heating s...

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Free Boiler Scheme/Grants 2025 - UPDATED

30th May, 2025 Guides

Free Boiler Scheme/Grants 2025...

Navigating the landscape of grants can be complex, with schemes differing in their eligibi...

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How to Prevent Boiler Limescale

30th May, 2025 Guides

How to Prevent Boiler Limescal...

Limescale, primarily composed of calcium carbonate, is a persistent problem in many boiler...

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OpenTherm

30th May, 2025 Guides

OpenTherm

OpenTherm began with the objective of streamlining communications between heating system c...

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Glow Worm Combi Boiler Costs

30th May, 2025 Guides

Glow Worm Combi Boiler Costs

A combi boiler, or combination boiler, is a high-efficiency water heater and a central hea...

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Boiler Service Cost (What To Expect)

30th May, 2025 Guides

Boiler Service Cost (What To E...

A boiler service is a thorough inspection of a boiler system by a qualified engineer.

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Vokera Boiler Flashing Green Light - How to Fix

30th May, 2025 Guides

Vokera Boiler Flashing Green L...

The green light is part of the boiler's diagnostic system; a flashing signal often points...

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How To Drain Central Heating System

30th May, 2025 Guides

How To Drain Central Heating S...

Understanding how to properly drain the system is vital for homeowners and DIY enthusiasts...

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Baxi Boiler Not Working, No Error Code

30th May, 2025 Guides

Baxi Boiler Not Working, No Er...

In the realm of boiler maintenance, two elements take centre stage: diagnosing issues and...

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Worcester Bosch Greenstar Ri Heat-Only Boiler Review

30th May, 2025 Guides

Worcester Bosch Greenstar Ri H...

Heat-only boilers, also known as 'regular' or 'conventional' boilers, form a vital compone...

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Worcester Bosch Boiler E9 Fault

30th May, 2025 Guides

Worcester Bosch Boiler E9 Faul...

Boiler error codes are sequences of numbers or letters displayed on the control panel of y...

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